CONTEXT Speculation exists that use of a full face shield by ice hockey players may increase their risk of concussions and neck injuries, offsetting the benefits of protection from dental, facial, and ocular injuries, but, to our knowledge, no data exist regarding this possibility. OBJECTIVE To determine the risk of sustaining a head or neck injury among intercollegiate ice hockey players wea...

PURPOSE To establish the protective efficacy against late complications of electron therapy using customized lead eye shields in cases with orbital and periorbital lesions. METHODS Between 1982 and 2006, 16 patients with 22 orbital and periorbital lesions were treated by electron therapy. Customized lead eye shields were prepared and placed in the respective patients' eyes during each fractio...

Multiagent chemotherapy as neoadjuvant treatment for multifocal intraocular retinoblastoma. Ophthalmology. 2001;108:2106-2115. 9. Madreperla SA, Hungerford JL, Cooling RJ, Sullivan P, Gregor Z. Repair of late retinal detachment after successful treatment of retinoblastoma. Retina. 2000;20:28-32. 10. Baumal CR, Shields CL, Shields JA, Tasman WS. Surgical repair of rhegmatogenous retinal detachme...

OBJECTIVE To identify specific risk factors for concussion severity among ice hockey players wearing full face shields compared with half face shields (visors). METHODS A prospective cohort study was conducted during one varsity hockey season (1997-1998) with 642 male ice hockey players (median age 22 years) from 22 teams participating in the Canadian Inter-University Athletics Union. Half of...

Financial Disclosure: None. Correspondence: Dr Shields, Ocular Oncology Service, Wills Eye Hospital, 840 Walnut St, Philadelphia, PA 19107 (mvenditto @shieldsoncology.com). Funding/Support: Support provided by the Paul Kayser International Award of Merit in Retina Research, Houston, Tex (Dr J. Shields), Macula Foundation, New York, NY (Dr C. Shields), the Noel T. and Sara L. Simmonds Endowment ...

In this work is presented a general architecture for a multi physical agent network system based on the coordination and the behaviour management. The system is organised in a hierarchical structure where are distinguished the individual agent actions and the collective ones linked to the whole agent network. Individual actions are also organised in a hybrid layered system that take advantages ...

Abstract The favourable properties of tungsten borides for shielding the central high temperature superconductor (HTS) core a spherical tokamak fusion power plant are modelled using MCNP code. objectives to minimize deposition into cooled HTS core, and keep radiation damage acceptable levels by limiting neutron gamma fluxes. shield materials compared W 2 B, WB, B 5 WB 4 along with reactively si...

Background: Bismuth composites are new and non-lead shields that are capable of breast dose reduction while preserving image quality. In this study, different percentages of Bismuth were used in designing and constructing polymer composites as breast shields in chest CT.  Materials and Methods: Micro particles of Bismuth with a ratio of 1% to 15% in Silicone matrix with two thicknesses were use...